Physiology EEG Practice Questions And Answers

A recording of electrical activity in the neurons of the cerebral cortex is called a correct answer: EEG Which of the following statements is true? 1. A recording of electrical activity in neurons of the cerebral cortex is called and electrocardiogram 2. One EEG electrode places on the scalp can measure the activity of the entire cerebral cortex 3. An EEG detects both grades potentials and action Potentials correct answer: 3. An EEG detects both grade potentials and action potentials Assuming that you had a baseline EEG with eyes closed; do you think you could determine whether a subject had their eyes open or closed if you were able to look at the alpha wave amplitude value? correct answer: Yes by the size of the wavelength if it's long or short The control is with subject relaxed and eyes are_________ as in segment one of biopic lesson 4 correct answer: Closed An EEG can likely determine all of the following except: correct answer: Anatomical Defects in the Brain __________ is the size of the wave and is measured in units termed ______________in this particular exercise. correct answer: Amplitude, Microvolts __________ is the number of wave cycles per second, using units termed_________________. correct answer: Frequency, Hertz Which is true about the root means square value? 1.You will be required to calculate the root means square value for your EEG recording in lab this week 2.A root means square is an average of the amplitudes of alpha, beta, delta and theta waves. 3. It is easier to see an increase and a decrease in your EEG reading by viewing the root means square channel. correct answer: 3 Only Which of the following is/are artifacts? correct answer: all of